nrf24: rename Nrf24Hal to Nrf24Phy and limit to fixed payload length
nrf24: rename example from nrf24-hal to nrf24-phy-test
nrf24phy: add enable/disable pipe functions
nrf24config: add approch for configuration interface
nrf24data: add approach for data layer interface
Commit generated font files.
Arduino UNO: use correct avrdude settings

The blink example was successfully tested on
an Arduino UNO
Merge branch 'develop' into feature/tolerance